Meta Behavioral + Coding Interview Prep

Meta Interview Structure

Typical onsite:

• 2x Coding rounds (35 min each, 2 problems per round)
• 1x System Design (45 min, E5+)
• 1x Behavioral (45 min)

Meta moves faster than Google/Amazon — 4 problems total in coding rounds.

Meta's Core Values in Interviews

Meta evaluates:

1. Move Fast — get to working code quickly
2. Be Bold — take risks, propose innovative solutions
3. Focus on Impact — "How does this affect users/revenue?"
4. Be Open — acknowledge trade-offs and limitations
5. Build Social Value — connect your work to human impact

Behavioral Questions at Meta

Frequent themes:

• "Tell me about a time you moved fast and broke something (and fixed it)."
• "Describe a time you had to make a trade-off between speed and quality."
• "Tell me about a time you disagreed with a product decision."
• "What's the biggest impact you've had in your current role?"
• "Describe a time you worked with a difficult cross-functional partner."

The impact framing Meta loves: Always end answers with user or business impact: "...which reduced page load time by 40%, directly improving DAU retention by 2%."

Meta Coding Speed Tips

Meta gives 35 min for 2 problems — that's 17 min per problem.

Speed techniques:

1. Jump to optimal immediately if you recognise the pattern
2. Use Python — fewer boilerplate lines
3. Pre-define helper functions mentally before writing
4. Skip obvious variable declarations (use single letters for loop vars)
5. Write tests only for the trickiest cases, not all of them

Language choice: Python preferred; JavaScript also fine. Avoid Java for speed.

Meta's 4-Problem Coding Format

Round 1 (35 min):

• Problem 1a: Easy/Medium (aim: 12 min)
• Problem 1b: Medium (aim: 20 min)

Round 2 (35 min):

• Problem 2a: Medium (aim: 15 min)
• Problem 2b: Medium/Hard (aim: 18 min)

Prep target: Solve mediums in < 15 min consistently.

Practice Problem Set for Meta